钒磷酸盐(NH_3CH_2CH_2NH_2)[VOPO_4]的水热合成和结构表征  

Hydrothermal Synthesis and Structural Characterization of Lamellar Vanadium Phosphate [NH_3CH_2CH_2NH_2][VOPO_4]

作　　者：王永在[1] 廖立兵[1] 李国武[1] 熊明[1] 

机构地区：[1]中国地质大学材料科学与工程学院,北京100083

出　　处：《化学学报》2005年第1期75-80,F008,共7页Acta Chimica Sinica

基　　金：国家自然科学基金(No. 40272024)资助项目.

摘　　要：标题化合物是在反应物摩尔比为 V2O5∶H3PO4∶H2NCH2CH2NH2∶H2O=0.55∶4∶3.6∶265 时, 175 ℃水热反应 5 d 合成的. 其结构特点是: 钒八面体[VO5N]共用角顶的氧形成“之”字型链, 链间由[PO4]共角顶连接成层; 乙二胺分子的一个 N直接与 V配位, 并伸向层间. 相邻层间存在强氢键. 晶体学数据: 单斜晶系, P21/c (No. 14), a=0.92108(2)nm, b=0.72851(1) nm, c=0.98204(2) nm, β=101.269(7)°, V=0.6462(4) nm3, Z=4, Dc=2.303 g?cm-3, R1=0.0417, wR2=0.0999.The title compound was synthesized from the hydrothermal reaction of V2O5, H3PO4, H2NCH2CH2NH2 and H2O in the molar ratio of 0.55 : 4 : 3.6 : 265 at 175 degreesC for 5 d. The structure contains layers built from chains of trans corner-shared [VO5N] octahedron that are interconnected by [PO4] tetrahedron.. The 2-aminoethylaminium cation is bonded through the nitrogen to the vanadium site as a monodentate ligand. Strong hydrogen bonds hold the layers together. Crystal data: monoclinic. space group P2(1)/c (No. 14), a=0.92108(2) nm, b=0.72851(1) nm, c=0.98204(2) nm, beta=101.269(7)degrees, V=0.6462(4) nm(3), Z=4, D-c=2.303 g.cm(-3), R-1=0.0417, wR(2)=0-0999.

关 键 词：PO 摩尔比 乙二胺 NH3 水热反应 磷酸盐 水热合成 单斜晶系 配位 结构表征 

分 类 号：O627[理学—有机化学]